--- zzzz-none-000/linux-2.6.32.61/net/bridge/br_private_stp.h	2013-06-10 09:43:48.000000000 +0000
+++ ar9-7330-650/linux-2.6.32.61/net/bridge/br_private_stp.h	2014-08-12 13:03:17.000000000 +0000
@@ -16,10 +16,22 @@
 #define BPDU_TYPE_CONFIG 0
 #define BPDU_TYPE_TCN 0x80
 
-struct br_config_bpdu
-{
-	unsigned	topology_change:1;
-	unsigned	topology_change_ack:1;
+/* IEEE 802.1D-1998 timer values */
+#define BR_MIN_HELLO_TIME	(1*HZ)
+#define BR_MAX_HELLO_TIME	(10*HZ)
+
+#define BR_MIN_FORWARD_DELAY	(2*HZ)
+#define BR_MAX_FORWARD_DELAY	(30*HZ)
+
+#define BR_MIN_MAX_AGE		(6*HZ)
+#define BR_MAX_MAX_AGE		(40*HZ)
+
+#define BR_MIN_PATH_COST	1
+#define BR_MAX_PATH_COST	65535
+
+struct br_config_bpdu {
+	unsigned int	topology_change:1;
+	unsigned int	topology_change_ack:1;
 	bridge_id	root;
 	int		root_path_cost;
 	bridge_id	bridge_id;
@@ -39,18 +51,19 @@
 
 
 /* br_stp.c */
-extern void br_become_root_bridge(struct net_bridge *br);
-extern void br_config_bpdu_generation(struct net_bridge *);
-extern void br_configuration_update(struct net_bridge *);
-extern void br_port_state_selection(struct net_bridge *);
-extern void br_received_config_bpdu(struct net_bridge_port *p, struct br_config_bpdu *bpdu);
-extern void br_received_tcn_bpdu(struct net_bridge_port *p);
-extern void br_transmit_config(struct net_bridge_port *p);
-extern void br_transmit_tcn(struct net_bridge *br);
-extern void br_topology_change_detection(struct net_bridge *br);
+void br_become_root_bridge(struct net_bridge *br);
+void br_config_bpdu_generation(struct net_bridge *);
+void br_configuration_update(struct net_bridge *);
+void br_port_state_selection(struct net_bridge *);
+void br_received_config_bpdu(struct net_bridge_port *p,
+			     const struct br_config_bpdu *bpdu);
+void br_received_tcn_bpdu(struct net_bridge_port *p);
+void br_transmit_config(struct net_bridge_port *p);
+void br_transmit_tcn(struct net_bridge *br);
+void br_topology_change_detection(struct net_bridge *br);
 
 /* br_stp_bpdu.c */
-extern void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
-extern void br_send_tcn_bpdu(struct net_bridge_port *);
+void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
+void br_send_tcn_bpdu(struct net_bridge_port *);
 
 #endif